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'1. E. CRYER.

Churn.

No. 67,105. Patented July 2s, |867.

NA TON. D C.

@umh 13.12% @anni @ffice JOHN E. O'RYER, OF GREEN POINT, NEW YORK.

Leners Patent No. 67,105 smartly 2e, 1867.

IMPROVEMENT IN GETRNS.

TO ALL WHOM I'l MAY; QONCERN;

'Be it known that I, JOHN E. CRYER, of Green Point, Brooklyn, E. D., in' the county of Kings,l and State of New York, have invented certain new and useful Improvements in Churns; and I do hereby declare that the' following is a full and exact description thereof. i i

My churn works by partially oscillating a shaft having suitable dashers'. rThe shaft extendsoutside of the churn and is threaded spirally, and is adapted to bexoperated by causing a suitable nut to reciprocate longitudinally backwards and forwards on the threaded portion. I have also devised a very effective and convenient meansof applying the several parts together and of operating the nut. I will first proceed to describe what I consider the best means of carrying outmy invention, and will afterwards designate the points which Ihelieve to be new; The accompanying drawings form apart of this specification. I

Figure 1 is `a side elevation, and u Figure is a vertical section atright angles thereto.

' Similar letters of reference indicate-like parts in both the figures. Tints are employed merely to aid in distinguishing parts, and do not indicate material.A The material of most-of the mechanism may be wood.

A is thebody of the churn. Al and A2 are uprights firmly fixed thereto. B is a vertical shaft, carrying arms B and dash-boards B2, thc latter being perforated as represented, andadapted to operate suiiiciently on the cream to break the globules and produce butter in the shortest and most eiiicient manner. C is a crossbar, supported in slots in the uprights AlAz., and heldin position by means of notches C1 G2, which fit the lower ends of the slots in the uprights, a bar being .held rmly down by means of the wedged piece D. There is a conical pivot, a, in the centre of the base of the body A,`and a corresponding pivot, c, in thecentre of the base-of the cross-bar C. These pivots t in corresponding holes in the ends of the shaft B. A deep and smooth spiral groove is formed in the shaft'B, above the cover of the churn, as indicated by b.- A nut, E, loosely surrounds the shaft B at this portion, and is provided with the feather e, which may be made in the form of a simple pin or screw, .as represented, orfwhich may be extended a considerable distance up and-down if preferred, so-as to give a Widerbearing in the spiral groove b. It will be understood that the feather e stands in the groove b, and compels the shaft B audits connections to partially rotatein opposite directions as the nut E is moved up and downen the shaft. Gr'is a hand-lever, mounted on the upper end of the upright A2. H is a fork,l strongly fixed on G at the point z, and so that'it allows for the vibration of the lever and of the link, but forbids the turning of the link around. Thearms H1 H2 of the link take hold on trunnions E E2, on the nut E.

The operation of my churn will now be readily understood. The cover A4 of the churn may be tted in halves, or in any other approved manner, so that it may be partially or entirely removed at will, and the creamA is poured into the churn at the top in the ordinary manner. After the cream is introduced and the cover is in place, the handle G is `reciprocated, and the dashers B2 are compelled to' traverse violently through the milk, first turning in one direction and then in the other. This motion rapidly induces the desired condition inthe mass, and after'the butter has fullytcome the cover is removed. Either before or after the separation of other parts of the churn, the butter and buttermilk are removed, and the churnis sealded and put away. To separate the parts of the churn, I drive out the wedge D, lift and remove the bar C, and after uithdrawing a pin at g can remove the shaft B, withits connection. Reversing this process replaces the parts, and puts the churn again in condition for use. I propose to employ a swell thread or bead, extending spirally around the shaft B, in lieu ofthe shaft b, if preferred, it being of course understood that in such case the nut E is recessed to match such raised thread. VI can employ two o'r more spiral threads b in lieu of one, with corresponding increase in the number of feathers e, or their equivalent, if preferred. My fork link H1 H2 forms a very ready and simple means of communicating motion from the hand-lever G to the traversing-nut E e, and at the same time feiiciently preventing the nut from turning around under the force to which it is subjected. I have tested my improved churn practically, and find its novel mechanism very edicient and free from objection.

`Having now fully described my'invention, what I claim as new in churns, and desire to secure by Letters Patent, is as follows: Y

l. I claim the spiralthreadcd shaft B 6,'in combination with the traversingenut E e, and with oscillating dashers, arranged to operate substantially in thevmanner and for the'purpose herein specified.

2. I claim the fork link H H1 H2, connected to the nut E e, and arranged to operate relatively thereto, and to the spiral-threadedvshaft B b, and to the hand-lever G, or its equivalent7 substantially asand for the lpurposes herein specified. v

3. I claim mounting the within-described partially-revolving shaft B Bl between pivots a c, in the manner represented, one of the said pivots being fixed on a' cross-bar, C Cl C2, secured in bearings A1 .A2 by means of the removable Wedge D, so as to allow the` Whole to he connected and disconnected, snbstantiallyvn the manner and for the purposes herein set forth.

In testimony whereofI have hereunto set my hand in the presence of two subscribing witnesses.

JOHN E. '(RYER.A

Witnesses:

rW. C. DEY,

C. C. LIVINGs. 

